General Information:
Chemical Formula:
(Ca,Mn++)(Sr,Ca)Mn+++(Al,Fe+++)2SiO4Si2O7O(OH)
IMA Status:
Approved IMA
Physical Properties:
Cleavage:
[???] Perfect
Color:
dark red.
Density:
3.65 - 3.73, Average = 3.69
Diaphaniety:
Transparent
Hardness:
6 - Orthoclase
Luster:
Vitreous (Glassy)
Streak:
purple brown
More details...